ARM: dts: msm: avoid multiple paths for slv_8 on msm8937

Circular path detected while accessing the slv_8
from master_snoc_pcnoc due to multiple paths to
reach the slv_8. This patch fixes the same.

Change-Id: I79cf75b3f6b9f64c68f2f7273d3722e9799caca6
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>